class_docstr: Extra context for symbolic functions with all methods from torch.Graph.
  
  NOTE: This class is not meant for external consumption. Please do not depend on
  it outside of torch.onnx as the interface may evolve.
  
  Attributes:
      graph: The _C.Graph being constructed.
      block: The current _C.Block being constructed.
      opset: The opset version.
      original_node: Current node that is being converted from.
      params_dict: Mapping from graph initializer name to IValue.
      env: Mapping from Torch domain graph Value to ONNX domain graph Value.
code: def __getattr__(self, name: str) -> Any:
      return getattr(self.graph, name)
  
imports: from __future__ import annotations
  import dataclasses
  import re
  import typing
  from typing import Any, Dict, Iterable, Optional, Sequence, Tuple, Union
  import torch
  from torch import _C
  from torch._C import _onnx
  from torch.onnx._globals import GLOBALS
  from torch.onnx._internal import _beartype, registration
label_desc: Use image node_id 1 for calling the GraphContext obj's underlying member method code with example usage: obj.__getattr__(name) and returns: getattr